What does "checkmate" mean?

Checkmate: A complete check; utter defeat or overthrow.

Additional senses

  1. 2.(Chess) To check (an adversary's king) in such a manner that escape in impossible; to defeat (an adversary) by putting his king in check from which there is no escape.
  2. 3.To defeat completely; to terminate; to thwart. To checkmate and control my just demands. Ford.

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